14.3 The Ideal Gas Law
PV = nRT the constant R depends on units of measure used for variables

Real vs ideal gases - For an ideal gas: (a) gas particles take up no space; (b) there are no intermolecular forces; follows the gas laws under all temp. and pressures conditions. There is no ideal gas, you can only get close. You get closest to ideal at VERY LOW pressures and HIGH temperatures.

Section 14.2 The Combined Gas Law and Avogadro's Principle

How to determine molar mass of a molecule from its chemical formula and a table of atomic masses, and how to convert the mass of a molecular substance to moles, number of particles of volume of gas at standard temperature and pressure.

Students Will be able to:

Calculate the molar mass from a chemical formula. Convert mass to moles to volume

Gas Sim

● &nbsp &nbsp Best Gas Law simulator – all the controls, better visually – Java applet Oklahoma State) - fabulous!!!
activity available Visit Site
● &nbsp &nbsp Allows control of P, V, T, and n Visit Site
● &nbsp &nbsp Gas Sim allows control of n, T, size of molecule and more Visit Site
● &nbsp &nbsp Gas Sim from PhET, done with Java. Allows control of T, V, P, n independently, or set one variable to constant. Almost the best. Visit Site
&nbsp ● Gas Sim for the Boyle's Law lab to be done at home (see Labs for details of how to do) Visit Site

Wigger Vids

● &nbsp &nbsp Boyle Demo - uses bell jar and vac pump, balloon inside that is sealed expands and then contracts. Visit Site
● &nbsp &nbsp HW p. 433 #30 how to use PV=nRT and it variables Visit Site
● &nbsp &nbsp Boyle's Law Lab - using an on-line gas sim - how to perform this lab Visit Site
● &nbsp &nbsp DO NOW 3-19-20 - Shows two problems one using Ideal Gas Law and one using Combined Gas Law Visit Site
● &nbsp &nbsp HW p. 432 #24 using Combined Gas Law and #28 using PV=nRT Visit Site
● &nbsp &nbsp Gas Laws - Question 48 p438 Visit Site
● &nbsp &nbsp Gas Sim on-line Mini-Lab how variables Visit Site
● &nbsp &nbsp Gas Laws - p. 443, question 60 - Gas Stoichiometry Visit Site
● &nbsp &nbsp Gas Laws Q 49 p438 finding molar mass Visit Site
● &nbsp &nbsp Gas Laws - p. 441.question 56 uses gas stoichiometry to get ratioes of volumes Visit Site
● &nbsp &nbsp p449 #106 uses PV = nRT and gas stoichiometry Visit Site
● &nbsp Boyles Law (our first gas law) - p422-1 complete solution Visit Site
● &nbsp Charles Law - p425 6 - complete solution Visit Site
● &nbsp Introduction to PV = nRT problems - the basics - Part 1 - Ideal Gas Law - one simple example with all variables being in units of measure PV = nRT can use. Visit Site
● &nbsp Introduction to PV = nRT problems - the basics - Part 2 - Ideal Gas Law - This problem requires you to convert 2 units of measure to different units compatible with PV = nRT. Visit Site
&nbsp ● How to identify Variables - aka how to classify P,V,n, & T by their units of measure. Example: if you are given Torr as a unit of measure, it wil be a Pressure, or P. Visit Site
&nbsp ● Gas Laws Q 49 p438 finding molar mass. Close Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info. make n = 1 mol, and use that to solve for V. Visit Site